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Thread: TIMING question

  1. #1
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    TIMING question

    So I took my car to the track, it ran fine ( got a 14.2 as my best ) for the timing I HAD it set on ( which was done by previous owner ) .

    after talking to some guys about how my car runs lean they did a timing test and It was set at -12 I'm pretty sure ( based off a standard base 10 timing ), they then set it at 10 base. It ran like shit and I only got 16s avg. Then they set it to 5, still ran like shit.

    My question is, is negative timing really that bad? I've been running on -12 or w/e for a WHILE now ( over 5000 miles atleast ) and no problems what so ever.

    I just picked up a timing light and going to adjust it after reading your guys opinions first.

  2. #2
    Senior Member SloSVO's Avatar
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    what car?

  3. #3
    Senior Member Wharf Rat's Avatar
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    Quote Originally Posted by SloSVO View Post
    what car?
    +1. If it's a 94 or 95 I'd put my money on a trashed harmonic balancer or engine temp sensor.

    I just went through this on my 95.
    2012 GT500 543/533 11.7@120
    1995 5.0 minute or two per lap

  4. #4
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    94 5.0.

    I don't think the HB is trashed, just wondering if it's ok to run retarded timing. It has 3.55's and a mild cam.

  5. #5
    Super Moderator 4Jenna's Avatar
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    Checking it with spout out?
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  6. #6
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    Yes the spout is out, the HB might be trashed lol. I set it at like 15-20 degrees and it ran AWESOME. No pinging or anything, just gobs of power.

  7. #7
    Super Moderator 4Jenna's Avatar
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    Its common for the balancer to spin on these cars, the rubber deal seperates usually.

    Get a good one if you replace it.
    Last edited by 4Jenna; 02-07-12 at 11:49 PM.
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  8. #8
    Administrator BurnTire's Avatar
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    I want to say I ran 13 back in the 5.0 fox days.

  9. #9
    Senior Member Wharf Rat's Avatar
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    When I bought my 95 it would ping on anything past 5 degrees. Through a combination of a new harmonic balancer, new plugs, new engine temp sensor, and cleaned MAF I can run it at 12 degrees w/out issue.
    2012 GT500 543/533 11.7@120
    1995 5.0 minute or two per lap

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